[Freeswitch-users] reverse time skew warning

What kind of problems can arise from the FreeSWITCH error message "Reverse time skew!"? I notice in the system logs that at the time of the FreeSWITCH complaint, ntp adjusted the system time backwards from 1:00:13.982493600Z to 1:00:13.982000000Z which is less than half a millisecond. That sounds negligible to you and mean, but that is an eternity for an android. I just hope it doesn't cause a serious problem down the road like a segfault or something every time ntp adjusts the time. Any comments? Thanks. Bote